are promo cards legal mtg New Card for the Magic the Gathering Pride event! In this event, every single commander has partner! You can build a deck with whatever two commanders you want at the Rules Lawyer - Judge Promos

Just dont replace it

Upon entering the battlefield, its controller has the option of having it fight a creature, making it effectively function as removal, or it can enter with twice the number of +1/+1 counters, making it a flexible hydra that can supply a great deal of value

Amusingly, your opponents will probably need a non-creature spell to take it out, so you might get one last draw on the Sentinel's way out

In this case, Blue seems to be the next logical choice, due to the amount of cards that support it, but Black is a close second place here as well

The nice thing is there are a lot of mana abilities that can be used to generate tokens on creatures and lands